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37 lines
702 B
C++
37 lines
702 B
C++
#ifndef ITEM_BASE_HPP
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#define ITEM_BASE_HPP
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#pragma once
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#include <cstdint>
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#include <functional>
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class Item;
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class Context;
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using FilePosition = std::uint32_t;
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struct ItemPointer
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{
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Item* item;
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FilePosition offset;
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bool operator==(const ItemPointer& o) const
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{ return item == o.item && offset == o.offset; }
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bool operator!=(const ItemPointer& o) const
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{ return item != o.item || offset != o.offset; }
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};
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using Label = std::pair<const std::string, ItemPointer>;
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namespace std
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{
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template<> struct hash<ItemPointer>
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{
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std::size_t operator()(const ItemPointer& ptr) const
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{
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return hash<Item*>()(ptr.item) ^ hash<FilePosition>()(ptr.offset);
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}
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};
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}
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#endif
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